IF condition (JS )

** IF statement **

• if statement runs a block of code when a condition is true.

• you can use if statement another if statement. - this is called nested if .

if else statement

• else statement runs a block of code when if condition is false

if (hour < 18) {
  greeting = "Good day";
} else {
  greeting = "Good evening";
}

• here we have else if is use to specifie the new condition first is false.

if (time < 10) {
  greeting = "Good morning";
} else if (time < 20) {
  greeting = "Good day";
} else {
  greeting = "Good evening";
}

*Terinary operator *

• shorthand of if else () ? x : y

Switch statement

• Switch statement select one or more code blocks to be executed

• Switch is often used as a more readable alternative to many if.. else if...else statements, especially when dealing with multiple possible values
  

switch(expression) {
  case x:
    // code block
    break;
  case y:
    // code block
    break;
  default:
    // code block
}

break- it break out the switch block.this will stop the execution inside the switch block.

default - keyword specifies a block of code to run if there is no case match.The default keyword is optional.